Re: [PATCH v4 0/6] Micro-optimize vclock_gettime

From: Andi Kleen
Date: Mon May 16 2011 - 12:09:48 EST

> - Don't turn off frame pointers in vDSO code.

Why? Note frame pointers are costly on some CPUs, like Atom.

Also unlike the primitive state of the kernel the user space debuggers
are usually advanced enough to support dwarf2 unwinding.

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